Antibacterial effects of iron oxide and silver nanoparticles synthesized by Bacillus subtilis: a comparative study

Sasani, Masoomeh; Fataei, Ebrahim; Safari, Reza; Nasehi, Fatemeh; Mosayebi, Marzieh

doi:10.5004/dwt.2021.27498

Cited by 12 publications

(10 citation statements)

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“…Ftir Analysis: FTIR spectra (Figure 01) shows a peak at 3249.79 cm -1 which refers to the presence of hydroxyl groups. The peak at 1034.47 cm -1 revealed the presence of C-N extended vibration of amines and strong peak at 666.75 cm -1 shows the presence of metal oxide bonds or the presence of Iron and oxide bonding so FTIR analysis clearly verifies the formation of Iron oxide nanoparticles [17][18].…”

Section: Resultsmentioning

confidence: 96%

Synthesis and Characterization of Iron Oxide Nanoparticles by Murraya Koenigii leaves

2022

jame

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Nanotechnology becomes the most interesting area for researchers from last two decades. There are several methods to synthesis nanoparticles but the use of green method for synthesis reduces or eliminates the generation of hazardous byproducts. Green synthesis method is environment friendly alternative to conventional synthesis techniques. Green chemistry is about reducing risk, energy, environmental impact, hazard, cost, materials and waste. The green method or biological method involves the use of microorganisms, plants etc. for synthesis of nanoparticles. In our present research work we use Murraya koenigii leaves powder extract as reducing and capping agent. Plant sources containing the phytoconstituents viz., Tannins, Alkaloids, Polyphenols, Flavonoids, Citric acid etc. Metallic and metal oxides nanoparticles of various shapes, sizes, contents and physicochemical properties can be synthesized using green synthesis method. The synthesized Iron oxide Nanoparticles were characterized be different analytical techniques. The surface morphology revealed by SEM, elemental composition by EDX, Different functional groups revealed by FTIR spectroscopy and particle size measured by particle size analyzer.

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Section: Resultsmentioning

confidence: 96%

Synthesis and Characterization of Iron Oxide Nanoparticles by Murraya Koenigii leaves

2022

jame

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“…The unique features of biofilm matrix barriers are due to the components of the biofilm that are charged negatively with the highly viscous and compact EPS structures. However, physical nanoparticles (degrading enzymes, nano-motors, or microneedle patches) can treat even the biofilm antibiotic resistance [ 38 , 39 ]. From all the above-mentioned case studies and reviews, it has been very clear that in the future, nanotechnology can be a promising approach for treating antibiotic resistance and ensure public health and safety.…”

Section: Viewpoint and Discussion With Conclusionmentioning

confidence: 99%

Nanotechnology—A Light of Hope for Combating Antibiotic Resistance

Muteeb

2023

Microorganisms

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Antibiotic usage and resistance are major health concerns. Antibiotic resistance occurs when bacteria evolve to resist the effects of antibiotics, making it impossible to treat infections. The overuse and misuse of antibiotics are the main contributing factors, while environmental stress (such as heavy metals accumulation), unhygienic conditions, illiteracy, and unawareness also contribute to antibiotic resistance. The slow and costly development of new antibiotics has lagged behind the emergence of antibiotic-resistant bacteria, and the overuse of antibiotics leads to negative consequences. The current study used different literature resources to generate an opinion and find a possible solution to antibiotic barriers. Different scientific approaches have been reported to overcome antibiotic resistance. The most useful approach among these is nanotechnology. Nanoparticles can be engineered to disrupt bacterial cell walls or membranes, effectively eliminating resistant strains. Additionally, nanoscale devices enable the real-time monitoring of bacterial populations, allowing for the early detection of resistance emergence. Nanotechnology, along with evolutionary theory offers promising avenues in combating antibiotic resistance. Evolutionary theory helps us understand the mechanisms by which bacteria develop resistance, allowing us to anticipate and counteract their adaptive strategies. By studying the selective pressures that drive resistance, we can therefore design more effective interventions or traps. The synergy between the evolutionary theory and nanotechnology presents a powerful approach to combat antibiotic resistance, offering new avenues for the development of effective treatments and the preservation of our antibiotic arsenal.

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“…For example, different methods evaluate different aspects of nanoparticle dimensions, or the method can induce a change in the effective particle size [167]. Among the most common methods for determining the size of iron oxide nanoparticles are transmission electron microscopy (TEM) [101,149,168,169], scanning electron microscopy (SEM) [7,149,170,171], X-ray diffraction (XRD) [170,[172][173][174], dynamic light scattering (DLS) [175][176][177], high-resolution transmission electron microscopy (HRTEM) [178][179][180], and scanning transmission electron microscopy (STEM) [119].…”

Section: Characterization Methodsmentioning

confidence: 99%

“…This property, like the size, is evaluated through direct viewing of the particles, so commonly, electron microscopy techniques are utilized. Among the various forms of iron oxide nanoparticles that have been reported are round (SEM) [181], spherical (SEM) [170,171], (STEM) [119], (TEM) [174], spheroidal (HRTEM) [180], cubic (SEM) [171], rectangular and triangular (HRTEM) [179], rhombohedral [149], and needle-like (FESEM and HRTEM) forms [182].…”

Section: Characterization Methodsmentioning

confidence: 99%

Iron Oxide Nanoparticles: Green Synthesis and Their Antimicrobial Activity

Zúñiga-Miranda,

Guerra,

Mueller

et al. 2023

Nanomaterials

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The rise of antimicrobial resistance caused by inappropriate use of these agents in various settings has become a global health threat. Nanotechnology offers the potential for the synthesis of nanoparticles (NPs) with antimicrobial activity, such as iron oxide nanoparticles (IONPs). The use of IONPs is a promising way to overcome antimicrobial resistance or pathogenicity because of their ability to interact with several biological molecules and to inhibit microbial growth. In this review, we outline the pivotal findings over the past decade concerning methods for the green synthesis of IONPs using bacteria, fungi, plants, and organic waste. Subsequently, we delve into the primary challenges encountered in green synthesis utilizing diverse organisms and organic materials. Furthermore, we compile the most common methods employed for the characterization of these IONPs. To conclude, we highlight the applications of these IONPs as promising antibacterial, antifungal, antiparasitic, and antiviral agents.

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Antibacterial effects of iron oxide and silver nanoparticles synthesized by Bacillus subtilis: a comparative study

Cited by 12 publications

References 0 publications

Synthesis and Characterization of Iron Oxide Nanoparticles by Murraya Koenigii leaves

Synthesis and Characterization of Iron Oxide Nanoparticles by Murraya Koenigii leaves

Nanotechnology—A Light of Hope for Combating Antibiotic Resistance

Iron Oxide Nanoparticles: Green Synthesis and Their Antimicrobial Activity

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